Device and method for avoiding contamination of multi-dose medicament vials
CA 2057015 A1 · Owner: Arnold, Victor A. · Inventors: Arnold, Victor A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure of this application is directed to a clean air tube (10), having a charge of purified air which provides a, constantly renewable source of purified air for loading into a medicament syringe prior to use of the syringe (14) for withdrawing liquid medicament from a multi-dose vial. The tube is fitted with a clean-filtering membrane (11), through which ambient air is filtered upon being drawn into the tube (10). The disclosure also describes the sequence of steps involved in loading the syringe with clean-filtered air.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 2, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.